This chapter concentrates on relations between the Jainas and other faith communities in the South Indian State of Karnataka during the twelfth to fifteenth centuries AD. It tracks ways in which the local Jaina community gradually lost its dominance, as other religions such as Vīraśaivism, Śaivism, Śrīvaiṣṇavism, and Islam either won converts locally or were introduced to the region from the south or north. Power relations started to change during the early twelfth century and continued to shift until the fifteenth or even nineteenth centuries AD. Following these changes in authority and control, the Jainas of Karnataka found themselves in a situation of disempowerment and extreme dependency. In this hostile environment, Jaina statues were removed or desecrated, and temple buildings were destroyed and converted. Despite this loss in influence on the part of the Jainas, in many ways, their new position prompted a two-way interaction between the belief systems and artistic practices of the old and the newly dominating groups, especially those of the Jainas and the Vīraśaivas. The Vīraśaivas not only demolished Jaina objects and spaces of veneration but also integrated them into their own religious practices, even though dogmatically, and ritually they made little or no sense in a Vīraśaiva religious context. At the same time, Jainas absorbed bhakti and Tantric elements into their own practice and their art and architecture were modified by Vīraśaiva followers. This mutual exchange meant that the sacred and artistic practices of neither religious group remained entirely the same. It will be shown that in the long run, even such initially difficult interactions ensured the integration of new faiths and artistic traditions into the cultural environment of South Asia.